package com.wolf.gulimall.ware.config;

import org.springframework.amqp.core.*;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.amqp.support.converter.MessageConverter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;

/**
 * rabbit 配置
 */
@Configuration
public class MyRabbitConfig {

    /**
     * 自定义消息类型转换 ,使用JSON序列化机制 进行消息转换
     *
     * @return Jackson2JsonMessageConverter
     */
    @Bean
    public MessageConverter messageConverter() {
        return new Jackson2JsonMessageConverter();
    }



    /**
     * 库存服务默认的交换机
     *
     * @return 交换机
     */
    @Bean
    public Exchange stockEventExchange() {
        return new TopicExchange("stock-event-exchange", true, false);
    }

    /**
     * 普通队列
     *
     * @return 普通队列
     */
    @Bean
    public Queue stockReleaseStockQueue() {
        return new Queue("stock.release.stock.queue", true, false, false);
    }


    /**
     * 延迟队列
     *
     * @return 延迟队列
     */
    @Bean
    public Queue stockDelayQueue() {

        Map<String, Object> arguments = new HashMap<>();
        arguments.put("x-dead-letter-exchange", "stock-event-exchange");
        arguments.put("x-dead-letter-routing-key", "stock.release");
        // 消息过期时间 2分钟
        arguments.put("x-message-ttl", 120000);
        return new Queue("stock.delay.queue", true, false, false, arguments);

    }


    /**
     * 交换机与普通队列绑定
     *
     * @return 绑定
     */
    @Bean
    public Binding stockReleaseBinding() {
        //String destination, DestinationType destinationType, String exchange, String routingKey,
        // 			Map<String, Object> arguments
        return new Binding("stock.release.stock.queue",
                Binding.DestinationType.QUEUE,
                "stock-event-exchange",
                "stock.release.#",
                null);
    }


    /**
     * 交换机与延迟队列绑定
     *
     * @return 绑定
     */
    @Bean
    public Binding stockDelayBinding() {
        return new Binding("stock.delay.queue",
                Binding.DestinationType.QUEUE,
                "stock-event-exchange",
                "stock.locked",
                null);
    }

}
